Die-press.



13 i meme 0. P. BASGOM.

DIE PRESS.

APPLICATION FILED FEB. 27, 1909. 931,006. Patented Aug. 10,1909.

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ANDREW. a. GRAHAM 00.. Punwumuamvuzns. WASHINGTON. n. c,

Patented Aug. 10, 1909.

3 SHEETS-SEEET 2.

G. P. BASOOM.

DIE PRESS. APPLICATION FILED F3127, 1909.

ANDREW. B. (mum co. PMnTo-umoaRAPHERs. wusumawm II c.

'0. P. BASGOM'.

Q DIE PRESS.

APPLICATION FILED IEB. 2'7, 1909.

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UNITED STATES.

PATE T OFFICE.

CALVIN P. BASOOM, OF PHILADELPHIA, SYLVANIA, ASSIGNOR TO FAYETTE R. PLUMB,

INCORPORATED, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PEN NSYL- VANIA.

DIE-PRESS.

s aificaaeor Letters Patent.

Patented Aug. 10, 1909.

: Application filed February 27, 1909. Serial No. 480,421.

To all whom 'it may concern: 1

Be it known that I, CALVIN P. BASCOM, a citizen of the United. States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Die-Presses; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to die presses and has for an object to provide a press having oscillating jaws, such jaws carrying die plates and adapted to hold an article while being punched to preventexpanding of the article by the punching process. j

A further object of the invention is to provide an improved form of oscillating jaw with improved die plate connecting the jaws and operating therewith. I e a A further object of the invention is to pro-' vide in a die press improved means foreperating the oscillating jaws. J

lVith these and other objects in view, the invention comprises certain'novel constructions, combinations and arrangements of parts, as will be hereinafter fully described and claimed.

In the drawings: Figure 1 represents the improved die press in side elevation. Fig. 2 is a fragmentary view'in side elevation enlarged showing the detail of one of the oscillating jaws. Fig. 3 is a'transverse sectional view of the machine taken on line 33 of Fig. 1. Fig.4 isa view in side elevation of a pair of oscillating jaws with their connecting die plate secured thereto.

Like characters of reference designate corresponding parts throughout the several views.

The press is constructed of side uprights or housings 1O erected upon any approved form of base 11 and joined at their upper ends by a cross piece 12. To the side hous ings 10 guide-ways 13 are secured within which gulde-ways a cross head 14 is mounted to reciprocate vertically. The cross head 14 is operated by means of pitman rods or links 15 pivoted between bearings 16 and. provided at their upper endswith eccentric straps 17 engaging upon eccentrics 18 mounted upon a shaft 19. The shaft 19 is driven in any approved manner here shown as by means of a gear 20 intergeared with a pinion 21 which is carried upon a shaft 22, which said shaft also carries the usual fast and loose pulleys 23 and a fly wheel 24.

Upon the base 11 a lower die plate 25 is secured in any approved manner provided with tapered or dove-tailed slots 26 adapted for holding a die, and the cross head 14 is also provided with an upper die plate 27 similarly provided with dove-tailed slots or grooves 28 adapted to hold an upper die. The lower die plate 25 is provided with fulcrunis 29 upon which are fulcrumed oscillating jaws 30 in any approved manner as by meansof a strap or clip 31. The oscillating jaws 30 are provided at their upper ends with an inclined or tapered extremity shown at 32 and with a jaw strap 33 secured to the upper end of such jaw and spaced therefrom to produce a slot 34 in which moves a pin or roller 35 carried by the cross head 14-. The roller 35 is preferably provided at its outer end with a flanged head or keeper 36 to prevent the jaw from moving upon the said roller longitudinally thereof. It will be noted especially from Fig. 4 that the jaws 30 are arranged in pairs mounted upon the same fulcrum 29 or fulcrums in alinement with each other and move simultaneously under the action of similar rollers 35 carried upon opposite sides of the cross head 14. The pair of jaws 30 are connected by means of a jaw die plate .37 secured thereto in any approved manner asby the bolts-38.

Opposite the die plate 37 a similar die plate 39 is secured to the housing 10 in a manner similar to the securing of the die plate 37 as by the bolts 40. It will be noted that the die plates 37 and 39 are provided with tapered dove-tailed recesses adapted to receive a die to be firmly seated therein by driving. The jaw plate 37 is preferably composed of cast orother easily frangible iron or material so that in case an article is received between the die plates 37 and 39, which is too cold or otherwise too hard to be operated upon by' the dies held by the said plates, the die plate 37 is broken or sheared upon the edges of the aw 30, thereby relieving the balance of the mechanism from undue strain, such die plates 37 being cheaply and quickly replaced.

The cross head 14 is provided with a socket 4:1 in which a punch 42 is seated and held in position by means of the pin 43 insorted through the cross head and engaging a complementary slot or furrow formed in the periphery of the shank of the punch.

The position and proportion of the punch 42 relative to the inclination and taper of the upper end of the oscillating jaws are such that when the cross head 14.- is at the upper extreme of its limit, the roller 35 is disposed in the upper extremity of the slot 34, and such jaw following-the movement imparted thereto by the inclination of the slot 34 is oscillated to move away from the die plate 39. An article, as for instance, a hammer, hatchet or the like, which is to have an .eye punched therein, is now inserted between the dies carried by the die plates 37 and 3S, and as the cross head descends the jaws 30 are forced toward the housing 10 by reason of the roller 35 riding downwardly upon the incline 32. The proportion is such that as long as the jaws 30 are being moved or until the roller 80 had reached the shoulder of the jaw the punch I2 has not engaged the work but approxin'iately at the time the roller 35 passes over the shoulder and starts to descend in the vertical portion of the slot- ?A, the jaws having been closed, the punch engages the work and while the roller is traveling downwardly in the vertical portion of the slot 34:, the punch is being inserted through the work gripped between the dies carried by the die plates 37 and 38. Upon the upward movement of the cross head 14 the punch t2 iswholly withdrawn from the work while the roller is traveling upwardly in the vertical portion of the slot 34, and as soon as the roller engages the inclined portion of the jaw strap 33, the punch has cleared the work and the jaw is opened to release the work from between the jaws.

It will be apparent, of course, that any approved form of dies may be carried by the die plates 25 and 27, and also by the die plates 37 and 39 so that any tool, implement or other article may be formed by the employment of the dies carried by either of the die plates mentioned.

\Vhat I claim is ,1. In a die press, a bed, a reciprocating head, jaws pivoted to the bed, provided with an inclined cam slot at the top, and means carried by the reciprocating head engaging within the slot. 7

2. In a diepress, a bed, a reciprocating head, jaws fulcrumed upon the base and provided adjacent their upper ends with inclined cam slots, means carried by the reciprocating head engaging within the slots, :1 die plate carried rigidly by the base, and an opposing die plate carried by the jaw.

3. In a die press, a base, a reciprocating head, a pair of jaws pivoted to the base and each provided adjacent its upper end with an inclined cam slot, means carried by the cross head engaging within the cam slots of the jaws, a die plate carried rigidly with the base, and a die plate rigidly secured to and spanning the interval between the jaws.

at. In a die press, a base, a reciprocating head, jaw members fulcrumed to the base, jaw straps secured adjacent the upper ends of the jaws and spaced therefrom producing a cam slot in each, a reciprocating head, means carried by the reciprocating head engaging within the cam slot, and a die plate carried by the jaws.

5. In a die press, a base, jaws spaced from each other and concentrically fulcrumed upon the base and provided adjacent their upper ends with registering cam slots, a reciprocating head, alined means carried by the head en aging within the cam slots, a die plate carried rigidly with the base, and a die plate spanning the interval between the jaws.

6. In a die press, a base, a pair of jaws fulcrumed upon the base, and provided adjacent their upper ends with cam slots, a reciprocating head, means carried by the head disposed within the cam slots, a die plate carried rigidly by the base, an opposing dic plate carried by the jaws, and a punch carried by the reciprocating head adapted to operate between the die plates.

7. In a die press, a base, oscillating jaws pivoted to the base, areciprocating head, means carried by the jaws providing a cam slot adjacent their upper ends part of which slot is inclined and part vertical, means carried by the cross head adapted to operate within the cam slot, a die plate carried rigidly with the base, an opposing die plate carried by the'jaws, and a punch carried by the reciprocating head so proportioned that it engages between the die plates only while the slot engaging means is traveling in the vertical portion of the slot.

In testimony whereof I aiiix my signature in presence of witnesses.

CALVIN I. BASCOM.

itnes'ses Riormnn C. ELLIS, FAYETTE It. PLUMB, JOHN M. VVILLI'AMS. 

